create_polygon · Claude Talk to Figma MCP: Risk & Policy

WHAT IT DOES

What create_polygon does on Claude Talk to Figma MCP

AI agents use create_polygon to create or update resources in Claude Talk to Figma MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Claude Talk to Figma MCP environment.

WHY IT NEEDS A POLICY

Why create_polygon needs a policy

This tool creates a new design object (polygon) in a Figma document, which is a reversible write operation. It modifies the document state by adding content, but the action can be undone. It does not execute arbitrary code, delete data irreversibly, or involve financial transactions.

From the tool's definition Tool name 'create_polygon' and description 'Create a new polygon in Figma' indicate the tool creates new design elements.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_polygon Rate-limited

create_polygon stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_polygon": {
      "limits": [
        {
          "counter": "create_polygon_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Claude Talk to Figma MCP, so you can run agents against it safely.

FAQ

Questions about create_polygon

What does the create_polygon tool do? +

Create a new polygon in Figma. It is categorised as a Write tool in the Claude Talk to Figma MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_polygon? +

Register the Claude Talk to Figma MCP server in PolicyLayer and add a rule for create_polygon: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Claude Talk to Figma MCP. Nothing to install.

What risk level is create_polygon? +

create_polygon is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_polygon? +

Yes. Add a rate_limit block to the create_polygon rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block create_polygon completely? +

Set action: deny in the PolicyLayer policy for create_polygon. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides create_polygon? +

create_polygon is provided by the Claude Talk to Figma MCP server (stranyer/claude-mcp-figma). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.